Brick-kiln



J. S. SPE1GHT.

Brick Kiln.

No. 11,234. 1 Patented July 4, 1854 @L a @L UNITED STATES PATENT OFFICE.

JOHN S. SIEIGHT, 0F BALTIMORE, MARYLAND.

BRICK-KILN.

Specification of Letters Patent No. 11,234, dated July 4, 1854.

To (ZZ `whomy it may concern.'

Be it known that I, JoHN S. Srinerrr, of the city of Baltimore and State of Mary land, have invented a new' and useful Improvement in Brick-Kilns; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in Which- Figure l, is a front elevation of a kiln, constructed according to my improvements; Fig. Q, is a longitudinal vertical section of the same in the line of tu, y, of Fig. l; Fig. 3, is a plan of the same; and Fig. 4, is a transverse vertical section of the same.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to eifect the burning of bricks with coal, in a perfect and economical manner. The nature of the invention consists in a certain arrangelnent of fire grates and air passages, whereby a very perfect degree of combustion is obtained, and the combustion can be regulated at all parts of the kiln.

To enable others skilled in the art to make and use my invention, I Will proceed to describe its construction and operation.

A, A, are the side walls of the kiln, which are built in the usual Way.

B, B, are broad Walls, resting on solid foundations, and running the Whole length, and supporting the fire-gratas, C, C, which also run the Whole length. The spaces, H, H, between the Walls, B, B, constitute the ash-pits, and also air passages to admit air to the tire through the grates, and are furnished With a door, D, at each end. A door, E, is also provided immediately over the fire-grate at each end thereof. In each Wall, B, there is an air passage, a, which requires to be of small size compared with the ash-pits. These passages, a, a, extend clear through from end to end, and have each a communication with one of the ash pits near the middle thereof, by means of one, two, or three, or any suitable number of lateral openings, b. These openings are not required at any part but near the middle. The passages are furnished with doors or Stoppers, G, Gr, at each end.

The kiln is filled With brick in the usual manner, through a door, F, in one side, and

the rau bricks are built in arches over the grates, C, C, being all supported on the Walls, B, B, between and at the sides of the grates, and thus resting on solid foundations. The combustion of the fuei on the gratos may be regulated in the most perfect manner. Then a very strong draft is required at all parts of the fire-gratos, or at anyone of them, the doors, D, D, are opened at each end and the stoppers removed from the passages, a, a, when a full supply of air is admitted, both at the ends and middle of the grate. Then it is desired to concentrate the draft upon any part of any grate or gratos, it may be done by closing one or both doors, D, D, of sush grate or grates, and taking out the Stoppers, G, Gr, or by closing the Stoppers, G, G, and opening either of the doors, D, D. When it is desired to reduce the draft at any part, either of the doors D, D, leading to any grate, or grates, may e Wholly or partly closed, or one or both of the stoppers, G, G, put in. In the above manner, the combustion can be controlled in all parts of the kiln. The coal can be fed at either end of the fire grates, as the case may require, by opening the proper door, E.

I am aware that in the patented kiln of William Linton, the air is supplied to the fire by lateral. openings in air arches between the re beds, but no provision is made for regulating the admission of air, except by closing the door of the air arches; and it is found in practice that the combustion can only be regulated at, and near, the ends of the res. That kiln is of expensive construction, in consequence of the number of arches, which can only be constructed of the best brick. My kiln is of very simple and cheap construction, having no arches whatever. The Walls, B, B, can be constructedof bricks which are unfit for market. The passages, a, a, do not require to be so Wide as the length of a brick, and are therefore made Without arching. It is also very durable.

I do not claim constructing the kiln With air passages between the fire beds, but

1What I claim my invention, and desire to secure by Letters Patent, is-

The long gratos C, C, with air passages H, H, which extend clear through the kiln below them, and have doors D, D, to admit the air at either or both ends, in combinaregulate the combustion, and thereby regution with small air1 passages a, a, betwen late the heat in all parts of the kiln.

them havin latere 0 enin s to tirow tie Y air under e middle pof thge fire, substnn- JOHB S SPEIGHT' 5 tially as herein described, for the purpose of `Witnesses:

regulating the admission of the air tu any EDWARD G. STAN,

part of any grate 01' every grate, so as t0 L. M. BENNE'IVF. 

